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How many atoms constitute one unit cell ...

How many atoms constitute one unit cell of a face-centered cubic crystal ?

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Number of atoms in one face centered cubic unit cell can be determined from the number of contributed from the face and the corners of the unit cell as :
`(8" corners "xx1/8" atom per corner"=8xx1/8=1" atom")+6" faces"xx1/2" atom per unitface"=6xx1/2=3" atoms")`
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Knowledge Check

  • How many atoms are in one unit cell of vanadium?

    A
    `2`
    B
    `3`
    C
    `4`
    D
    `1`

  • What is the number of atoms in a unit cell of face-centred cubic crystal ?

    A
    4
    B
    6
    C
    2
    D
    1

  • Total number of atoms per unit cell in a face-centred cubic unit cell is

    A
    4
    B
    3
    C
    2
    D
    1

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    How many atoms can be assigned to its unit cell if an element forms (i) a body centred cubic cell and （ii) face centred cubic cell ?

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